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add lround, llround

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bolero-MURAKAMI 2012-07-05 08:03:32 +09:00
parent 77f058a34c
commit 36fe60bec3
7 changed files with 140 additions and 28 deletions
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11
sprout/math/trunc.hpp
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@ -7,6 +7,7 @@
#include <stdexcept>
#include <sprout/config.hpp>
#include <sprout/math/detail/config.hpp>
#include <sprout/math/isinf.hpp>
#include <sprout/type_traits/enabler_if.hpp>
namespace sprout {
@ -18,11 +19,11 @@ namespace sprout {
>
inline SPROUT_CONSTEXPR FloatType
trunc(FloatType x) {
return std::numeric_limits<std::uintmax_t>::max() < x || std::numeric_limits<std::uintmax_t>::max() < -x
? throw std::domain_error("trunc: Sorry, not implemented.")
: x < 0
? -static_cast<FloatType>(static_cast<std::uintmax_t>(-x))
: static_cast<FloatType>(static_cast<std::uintmax_t>(x))
return sprout::math::isinf(x) ? x
: std::numeric_limits<std::uintmax_t>::max() < x || std::numeric_limits<std::uintmax_t>::max() < -x
? throw std::domain_error("trunc: Sorry, not implemented.")
: x < 0 ? -static_cast<FloatType>(static_cast<std::uintmax_t>(-x))
: static_cast<FloatType>(static_cast<std::uintmax_t>(x))
;
}